<span>Reactive is the answer you are looking </span>
Answer:
D. By adding the vectors

Explanation:
Given
Represent the velocity of the river current as VR

Represent the velocity of the boat as VB

Required
How to calculate the velocity of boat relative to river current
From the question, we understand that both move in the same direction.
So, the relative velocity V is calculated as:



Notice that the both velocities are added together to get the relative velocities.
This is so because they both move in the same direction
<em>From the list of given options, only option D is correct.</em>
<span>7 October 1879 as part of </span>Bismarck<span>'s system of alliances to prevent or limit war </span><span>Austria Hungary and Germany joined the triple alliance in order to protect each other from the neighboring country Russia </span>
<span>The people of the Northwest Coast wore very little clothing, except when it was cold. In the warmer months, men would often go naked, and women would only wear bark skirts. The women made most of the clothing out of softened cedar wood or bark, animal leather, and wool.</span>
Albert einstein was a famous, and probably the most well know one.